Jesse

Can some one help me,I've never worked on older motorcycles and I'm having trouble hooking up fuel lines to the carbs because I don't know what goes where,the first picture is of a hose going into the carb but it wasn't attached to anything on the other end the second picture is of what I think is where a fuel line goes but the it had a rubber plug over it,the third picture is of the petcock or the fuel valve,can someone tell me how to hookup the fuel lines,we can do it over the phone or I can send more pictures or just talk on the forums,that would be greatly appreciated